Academic Journal
Microbial Community Dynamics During Key Life History Transitions in the Deep-Sea Chemosymbiotic Mussel, Gigantidas childressi
| العنوان: | Microbial Community Dynamics During Key Life History Transitions in the Deep-Sea Chemosymbiotic Mussel, Gigantidas childressi |
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| المؤلفون: | Beaver, Tessa F |
| المصدر: | WWU Graduate School Collection |
| بيانات النشر: | Western CEDAR |
| سنة النشر: | 2022 |
| المجموعة: | Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) |
| مصطلحات موضوعية: | symbiosis, larval development, larval ecology, microbiome, microbial ecology, gigantidas childressi, Biology |
| الوصف: | Marine invertebrates form specific associations with bacterial communities that are different from their environment, change throughout their development, and shape evolutionary and ecological processes. The bathymodiolin (Mytilidae) mussel Gigantidas childressi lives at deep-sea methane seeps and relies on methanotrophic endosymbionts for its nutrition. Its larval life, however, is spent feeding in the water column. Upon metamorphosis at a suitable seep habitat, methanotrophic bacteria rapidly colonize gill cells and the juvenile mussel switches to symbiont-derived energy. To determine if the microbiome of the G. childressi changes during these transitions, the V3/V4 region of the 16S rRNA gene was sequenced to census the bacterial diversity within G. childressi across early development. Like larvae of other deep-sea taxa, diversity was relatively low in all samples, but results show strong evidence for the re-organization of the larval and juvenile microbiomes based on stage-specific shifts in both habitat and nutritional mode. In planktotrophic (feeding) larvae, the microbiome is influenced in part by the environment, with key ASVs assigning to environmental generalists such as Pseudomonas and Sphingomonas. Other taxa were specific to pediveligers and veligers and were not found in juveniles or the surrounding water. Chloroplast sequences were detected in most swimming larvae, potentially as a component of the larval diet in the form of eukaryotic phytoplankton in the gut. Our results also suggested that initial infection of chemoautotrophic symbionts occur before settlement and metamorphosis in pediveligers of G. childressi, which were enriched for several potential chemoautotrophic symbionts that were found in juveniles. In early juveniles, the microbiome is mainly composed of several strains of methanotrophic symbionts known to inhabit G. childressi. Unexpectedly, we also detected thiotrophic, sulfur-oxidizing symbionts related to the SUP05 cluster, a well-known clade of symbionts in other Bathymodiolin ... |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://cedar.wwu.edu/wwuet/1115; https://cedar.wwu.edu/cgi/viewcontent.cgi?article=2145&context=wwuet |
| الاتاحة: | https://cedar.wwu.edu/wwuet/1115 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=2145&context=wwuet |
| Rights: | Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission. |
| رقم الانضمام: | edsbas.BB62E656 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |